616183961 has 12 divisors (see below), whose sum is σ = 647958948. Its totient is φ = 585899424.

The previous prime is 616183951. The next prime is 616183969. The reversal of 616183961 is 169381616.

It can be written as a sum of positive squares in 2 ways, for example, as 594384400 + 21799561 = 24380^2 + 4669^2 .

It is not a de Polignac number, because 616183961 - 2¹⁰ = 616182937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (616183969) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 88151 + ... + 94883.

It is an arithmetic number, because the mean of its divisors is an integer number (53996579).

Almost surely, 2^616183961 is an apocalyptic number.

It is an amenable number.

616183961 is a deficient number, since it is larger than the sum of its proper divisors (31774987).

616183961 is a wasteful number, since it uses less digits than its factorization.

616183961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6952 (or 6929 counting only the distinct ones).

The product of its digits is 46656, while the sum is 41.

The square root of 616183961 is about 24823.0530152921. The cubic root of 616183961 is about 850.9488647141.

The spelling of 616183961 in words is "six hundred sixteen million, one hundred eighty-three thousand, nine hundred sixty-one".